Calculating Work, pumping water out of a circular swimming pool | Summary and Q&A

TL;DR

Calculate the work required to pump water from a circular swimming pool based on its dimensions.

Key Insights

• 💦 Calculating the work done to pump water involves finding the weight of each horizontal slice and multiplying it by the distance traveled.
• 💦 The weight of a slice is determined by its volume and the density of water.
• 🎱 The distance for each slice is calculated by subtracting its height from the total height of the pool.
• 💦 The work is calculated using integration to sum up the contributions from all the slices.

Transcript

in this equ we are going to calculate the work that we need in order to pump up water from a swimming pool here we have a circular swimming pool and the diameter is 24 ft and then the height of the swimming pool is 5T the water level right here is 4T and we are going to pump all this water over the site and first of all we have to know what is work... Read More

Questions & Answers

Q: How is the weight of each slice of water calculated?

The weight of each slice is determined by multiplying its volume (calculated using the formula for the volume of a cylinder) by the density of water (62.5 pounds per cubic foot).

Q: How is the distance for each slice of water determined?

The distance for each slice is found by measuring the distance from the slice to the top of the swimming pool. This distance is equal to the total height of the pool minus the height of the particular slice.

Q: What is the formula for the volume of each slice?

The formula for the volume of each slice is πr^2h, where r is the radius of the pool (which is constant for all slices) and h is the height of the particular slice.

Q: How is the work to pump the water calculated?

The work is calculated by multiplying the weight of each slice by the distance it needs to travel, and then summing up these values for all the slices. This is done using integration.

Summary & Key Takeaways

• The video explains how to calculate the work needed to pump water from a circular swimming pool.

• The approach involves dividing the pool into horizontal slices and calculating the weight of each slice based on its volume.

• The work is then determined by multiplying the weight of each slice by the distance it needs to travel.